Ventilator



Jan. 30, 1945. w NORR|$ 2,368,320

vENTILA'To R Filed Jul y 1, 1942 INV ENT OR.

BY RTTORW Patented Jan. 30, 1945 OFFICE VENTILATOR- William A'. Norris, Alhambra, Calif.

Applicationx.-J1lly 1, 1942, Serial No. 449,209

4 Claims.

A further object of the invention isto provide a novel mounting for the parts of a ventilator;

An additional object of theinvention-istoprovide a. novel floating closure'mem ber for closing,

the outlet portion of a ventilator housing.

Other objects and advantages'cf the invention will be apparent from the iollowin-g description taken in connection with the accompanying drawing wherein:

Fig. 1 is a central sectionalview through a ventilator embodying the features of my invention;

Fig. 2 is a top plan view of the Ventilator with parts broken away;

Fig.3 is aside elevation of the ventilator; Fig.4 is a top plan view showing the. motor support;

Fig. 5 is a side elevation, on a reduced. scale, showing the ventilator with the conduit, thereon; Fig. 6 is a side elevation, with parts broken away, showinga modification; and. I

Fig. is an enlarged sectional detail showing the modification,

Referring to the drawing by reference characters I have shown my invention as embodied in a ventilator which is indicated generally-at 10. As shown the ventilator includes a cylindrical housing I l which may be made of sheet metal.

The housing includes a plurality offoot members 12 which are shown as arranged in diametris cally opposed pairs. The foot members are arranged within the housing and aresecured there to as by welding at l3. Each foot member includes an outwardly directed, radially extended portion l4 through which fastening members such as screws l5 extend to secure the housing to the ceiling H; of a dwelling. A pair of the opposed foot members have inwardly directed portions thereon as at I! which extend into the housing and engage a support l8 to which they are re movably secured by screws IS.

The support includes a generally circular body portion 20 and outwardly extending finger portions 2!. The portions 20 and 2| are provided with a continuous peripheral downwardly extending flange 22. The portion of the flange 22 about the circular portion 20 is of a size to engage the top portion 23 of a motor 24which is secured to the circular portion 20 by bolts 25.

The motor 24 includes an armature shaft 21 on which an airimpeller 28' is mounted. This-air impeller includes a hub portion 29 and a plurality of.b1ades 30. Each blade includes an inclined portion 3! by means of which air. is. forced-upwardly in the housing I I. An impeller of similar construction is shown in. my prior Patent 2,271,709, grantedFebruary 3, 1942.

' Tooperate the motor the latter is provided with a conductor member.,32' which terminates in a plug 33. Theplug 33 fits into a receptacle 34 from which. wires..35 extendto a suitable source of power. I

Thev blades 3!] are so. proportioned and spaced that when thescrews H) are. removedthe entire motor assembly-with the air impeller thereon may be. moved downwardly in the. housing. so that a pair of. the blades straddle. the receptacle 34. To

remove the motorthe plug.33 is pulledfrom. the receptacle and the screws [9. arereleased.

Above the impeller 28 the housing. is provided with an inwardly directed head. 36. which when the motor is not running, is engaged by acibsure member 31. This closure member comprises a disc having alperipheral bead 38 and having stiff.- ening ribs 39-:which intersect a central circular head- 40. The construction of the-beads 36 and 38 is such that an. insectand dust tight seal is provided where the beads engage.

Th disc 31 is made. of light weight material are arranged above the bead 36 and beneath the stop members 42. The air advanced by the impeller 28 passes outwardly through the openings 43. p

The closure 4| includes an annular rib portion 44 held in place by the screws [5 and a central portion which is made of suitable mesh material.

In order to conduct air which passes through the opening 43 to a remote location I show the housing I l as providedwith a conduit member 46. This member includes a lower portion 41 which has a tight sliding fit with the housing I I and a conduit portion 48 connected to the portion 41 by a flaring portion 49.

In Fi s. 6 and 7, I "show a modification of my invention wherein the housing, motor mounting, and associated parts are similar in all respects to that described above. In the modification the armature shaft 2? extends upwardly into the housing. A disc member 50, similar to the disc member 39 previously described, includes a depending tubular member 51 which has a flaring lower end 52 and a flange 53 at the upper end. A member 54 is arranged opposite the flange 53 and the parts are secured together by bolts 55.

The members 50, and 54 have a central aperture 56 which receives the upper end of the armature shaft 21. When the motor is not running the disc closure member 50 takes the position shown in dotted lines shown in Fig. 6. When the motor is running the column of air lifts the disc member 5!) to the solid line position shown in Fig. 6. In this latter position the flaring skirt 52 is free from engagement with the armature shaft 21' so that there is no wear on the parts.

From the foregoing description it will be apparent that I have invented a novel ventilator which can be economically manufactured and is highly efflcient for its intended purpose.

Having thus described my invention, I claim:

1. In a ventilator, a cylindrical housing having a plurality of foot members thereon, said foot members having outwardly directed radially extending portions adapted to engage a portion of a wall, a closure member including a reticulated central portion and a peripheral collar secured thereto, means to secure said collar to said radially extending portions on certain of the foot members, a receptacle outlet member mounted in said housing, certain of said foot members being opposed and having inwardly extending portions thereon, a support removably mounted on said inwardly extending portions, said support extending across said housing, a motor removably mounted on said support, said motor having a plug, member thereon adapted to fit said receptacle,,said motor having an armature shaft, an air impeller mounted on said shaft, said impeller including radial blades, the blades adjacent their free ends being spaced apart a distance greater than the width of said receptacle whereby the blades may pass the receptacle when the motor is -free, said housing extending beyond the impeller and including a plurality of spaced outlets in the sidewall thereof, said housing having a bead adjacent to the inner portion of said outlets, a ireelyflowing plate closure member engaging said bead, said plate member being slidable in said housing, and comprising a disc .including stiffening ribs and a peripheral flange and means on said casing and at the edge of said outlets remote from said casing head .to limit the outward movement of said disc.

2. In a ventilator, a cylindrical housing, a support mounted in said housing, a motor mounted on said support, said motor having an armature shaft, an air impeller mounted on said shaft, said impeller including radial blades, said housing extending beyond the impeller and including a plurality of spaced outlets in the sidewall thereof, a plate member slidable on said shaft and when in upper position being free from engagement with said shaft, and means to limit the outward movement of said disc.

3. In a ventilator, a cylindrical housing having a plurality of foot members thereon, said foot members having outwardly directed radially extending portions adapted to engage a portion of a wall, certain of said foot members being opposed and having inwardly extending portions thereon, a support removably mounted on said inwardly extending portions, said support extending across said housing, a motor mounted on said support, said motor having an armature shaft, an air impeller on said shaft, said impeller including radial blades, said housing extending beyond the impeller and including a plurality of spaced outlets in the sidewall thereof, said housing having a bead adjacent to the inner portion of said outlets, a plate closure member slidable on said armature shaft, said plate closure member engaging said head, said plate closure member comprising a disc including stifiening ribs and a peripheral flange and means on said housing at the edge of said outlets remote from said housing bead to limit the outward movement of said disc.

4. In a ventilator, a cylindrical housing having a plurality oi foot members thereon, said foot members having outwardly directed radially extending portions adapted to engage a portion of a wall, certain of said foot members being opposed and having inwardly extending'portions thereon, a support removably mounted on said inwardly extending portions, said support extending across said housing, a motor mounted on said support, said motor having an armature shaft, an air impeller. on said shaft, said impeller including radial blades, said housing extending beyond the impeller and including a plurality of spaced outlets in the side wall of the extending portion, said housing being imperforate below the spaced outlets, said air impeller being located below said spaced outlets, said housing having a bead adjacent to the inner portion of said outlets, a freely floating disc closure having a diameter less than the inner diameter of said housing, said closure engaging said bead, said disc closure including stiifening ribs and a peripheral flange and means on said housing at the edge of said outlets remote from said housing head to limit the outward movement of said disc closure, said disc closure being disposed above said impeller so that it is raised by the column of air from said impeller, said disc closure being free to drop by gravity when the impeller is idle.

WILLIAM A. NORRIS. 

